It’s almost four weeks since Malaysia Airlines flight 370 vanished. But Malaysia’s prime minister has vowed he will never rest until he can explain what happened to the jet.

Najib Razak made the comments during a brief visit to Perth, where he met with his Australian counterpart, Tony Abbott. The two leaders pledged that no effort would be spared to give the families of those on board, the answers they need.

Malaysian Prime Minister Promises to Keep Searching for Plane

Malaysian Prime Minister Promises to Keep Searching for Plane

It's almost four weeks since Malaysia Airlines flight 370 vanished. But Malaysia's prime minister has vowed he will never rest until he can explain what happened to the jet.